AU2022203667A1 - Well packers - Google Patents
Well packers Download PDFInfo
- Publication number
- AU2022203667A1 AU2022203667A1 AU2022203667A AU2022203667A AU2022203667A1 AU 2022203667 A1 AU2022203667 A1 AU 2022203667A1 AU 2022203667 A AU2022203667 A AU 2022203667A AU 2022203667 A AU2022203667 A AU 2022203667A AU 2022203667 A1 AU2022203667 A1 AU 2022203667A1
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- Australia
- Prior art keywords
- sealing element
- packer
- prop
- upward
- cone
- Prior art date
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- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 160
- 238000001125 extrusion Methods 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 6
- 239000004809 Teflon Substances 0.000 claims description 5
- 229920006362 Teflon® Polymers 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 3
- CNQCVBJFEGMYDW-UHFFFAOYSA-N lawrencium atom Chemical compound [Lr] CNQCVBJFEGMYDW-UHFFFAOYSA-N 0.000 description 22
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000009977 dual effect Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 2
- -1 ether ketone Chemical class 0.000 description 2
- 229920006169 Perfluoroelastomer Polymers 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/06—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting packers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
- E21B33/1216—Anti-extrusion means, e.g. means to prevent cold flow of rubber packing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1293—Packers; Plugs with mechanical slips for hooking into the casing with means for anchoring against downward and upward movement
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Glass Compositions (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Rotary Pumps (AREA)
- Centrifugal Separators (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Abstract
A packer for wells can include a body having a tubular shape, a sealing element having an
upward end and a downward end and disposed around the body. The packer also includes a
first prop upward of the sealing element, and a second prop downward of the sealing element.
The first prop is configured to wedge under the upward end of the sealing element and the
second prop is configured to wedge under the downward end of the sealing element to push
the sealing element outward at both the upward end and the downward end.
Description
This application is a divisional application of Australian patent application 2016424859 which in turn is the national phase entry of PCT application PCT/US2016/054863 published as W02018/063354. The entire contents of each of these publications is hereby incorporated by reference.
BACKGROUND 1. Field The present disclosure relates to well drilling and exploration, more specifically to well packers.
2. Description of Related Art Certain well packers are used to create gas tight seals, e.g., in between sections of production casing. Traditional designs of packers can utilize a compression seal to squeeze and deform the seal outwardly. Certain designs utilize a single prop element which wedges under a portion of the sealing element to force the seal outward. The benefits of the single prop element are limited to one side of the packer. Consequently pressure reversals from one side to the other of the sealing element result in some loss of energy stored in the seal. Such conventional methods and systems have generally been considered satisfactory for their intended purpose. However, there is still a need in the art for improved well packers. The present disclosure provides a solution for this need.
2a. Summary of Invention In one aspect of the invention there is provided a packer for a well, comprising a body having a tubular shape; an upper sealing element, a middle sealing element, and a lower sealing element disposed around the body; a first prop upward of the middle sealing element and downward of the upper sealing element; and a second prop downward of the middle sealing element and upward of the lower sealing element, wherein the first prop is configured to wedge under the upper sealing element to push the upper sealing element outward, and wherein the second prop is configured to wedge under the lower sealing element to push the lower sealing element outward.
So that those skilled in the art to which the subject disclosure appertains will readily
understand how to make and use the devices and methods of the subject disclosure without
undue experimentation, embodiments thereof will be described in detail herein below with
reference to certain figures, wherein:
Fig. 1A is a cross-sectional elevation view of an embodiment of a packer in accordance
with this disclosure, shown in a retracted state;
Fig. 1B is a cross-sectional elevation view of the packer of Fig. 1A, shown in a partially
deployed state wherein the sealing element is pushed up on the upper prop;
Fig. 1C is a cross-sectional elevation view of the packer of Fig. 1A, shown in a fully
deployed state wherein the lower prop is wedged under the sealing element;
Fig. 2A is a cross-sectional elevation view of an embodiment of a packer in accordance
with this disclosure, shown in a retracted state; and
Fig. 2B is a cross-sectional elevation view of the packer of Fig. 1A, shown in a deployed
state wherein the upper prop is wedged under the upper sealing element and the lower prop is
wedged under the lower sealing element, wherein the middle sealing element is compressed
between the upper and lower props.
Reference will now be made to the drawings wherein like reference numerals identify
similar structural features or aspects of the subject disclosure. For purposes of explanation and
illustration, and not limitation, an illustrative view of an embodiment of a packer in accordance
with the disclosure is shown in Fig. 1A and is designated generally by reference character 100.
Other embodiments and/or aspects of this disclosure are shown in Figs. 1B and 1C-2B. For
convenience, "upward" and "upper" refer generally to the left side of the figures while
"downward" and "lower" refer generally to the right side. Embodiments of the systems and
methods described herein can be used to more effectively seal zones of a wellbore by providing a
packer that uses two props (e.g., a fixed prop and a movable prop), to seal off the wellbore.
Referring to Fig. 1A, a packer 100 for wells (e.g., wellbore 102 or casing thereof) can
include a body 101 having a tubular shape, a sealing element 103 having an upward end 103a
and a downward end 103b and disposed around the body 101. The packer 100 also includes a
fixed first prop 105 formed on the body 101 upward of the sealing element 103 and a movable
second prop 107 mounted on the body 101 downward of the sealing element 103. The second
prop 107 can slide toward the first prop 105 when the packer 100 is actuated to push the sealing
element 103 onto the first prop 105. This causes the first prop 105 to wedge under the upward
end 103a of the sealing element 103 as shown in Fig. 1B. The sliding of the second prop 107
also causes it to wedge under the downward end 103b of the sealing element 103 to push the
sealing element 103 outward (i.e., radially toward the wellbore 102 or casing thereof). This
provides significantly improved sealing for the well in that the sealing element 103 is propped or
pressed against the well at both the upward end 103a and the downward end 103b as shown in
Fig. 1C. For example, in some embodiments the first and second props 105, 107 can be ramp shaped or sloping toward the sealing element 103 to facilitate wedging under the upward end
103a downward end 103b of the sealing element 103.
As shown, the first prop 105 can be formed as part of the body 101 or otherwise fixed
relative to the body in certain embodiments, while the second prop 107 can be movable relative
to the body 101 to slide upward and wedge under the sealing element 103. One having ordinary
skill in the art appreciates that the second prop 107 and the first prop 105 can also be reversed in
function as described herein. For example, it is contemplated that the first prop 105 can move
relative to the body 101 and the second prop 107 is formed as part of the body 101 (or otherwise
fixed relative to the body). In either case, having dual props allows the sealing element 103 to
provide greater sealing pressure compared to single prop packers for substantially the same
amount of setting or actuating force as single prop packers.
In certain embodiments, referring to Fig. 1B, the second prop 107 can be configured (i.e.,
sized, shaped, positioned, and/or connected) to push the sealing element 103 up onto the first
prop 105 when wedging under the sealing element 103. For example, the second prop 107 can
be connected (e.g., pinned) to the body 101 or any other suitable fixed member and then a
pressure or other force can be applied to the packer 100 to remove the connection (e.g., shear the
pin) fixing the second prop 107 relative to the body 101.
In certain embodiments, the packer 100 can include a lower cover sleeve 111 that is
slidably disposed around the second prop 107. The lower cover sleeve 111 can have a lower
pushing face 111a configured to push the sealing element 103 upward to wedge the first prop
105 under the upward end of the sealing element 103. In this regard, the lower cover sleeve 111
and/or the second prop 107 can be breakably pinned together and work in conjunction to force
the sealing element 103 upward before the second prop 107 wedges under the sealing element
103. As shown in Fig. 1B, the lower cover sleeve 111 prevents the second prop 107 from
wedging underneath the sealing element 103 while the lower cover sleeve 111 is pinned to the
second prop 107.
In certain embodiments, the packer 100 can include an upper cover sleeve 113 slidably
disposed around the first prop 105. The upper cover sleeve 113 can include an upper pushing
face 113a (see Fig. 1B) configured to limit upward movement of the sealing element 103 after
the first prop 105 is wedged under the upper end 103a of the sealing element 103, as shown in
Fig. 1B.
Referring to Fig. 1C, after the sealing element 103 is pushed up on the first prop 105,
continued force can shear the connection (e.g., a pin) fixing the lower cover sleeve 111 to the
second prop 107. The second prop 107 can then move upward and under the downward end
103a of the sealing element 103. Any other suitable sequence of events and/or other packer
components are contemplated herein to be used with packer 100.
In certain embodiments, e.g., as shown in Fig. 2A, a packer 200 for a well includes a
body 201 having a tubular shape and dual props where both props are movable. In such an
embodiment, there can be multiple sealing elements, e.g., an upper sealing element 203a, a
middle sealing element 203b, and a lower sealing element 203c disposed around the body 201.
A first prop 205 is disposed upward of the middle sealing element 203b and downward of the
upper sealing element 203a. A second prop 207 is disposed downward of the middle sealing
203b element and upward of the lower sealing element 203c.
The lower sealing element 203c can slide toward the upper sealing element 203a when
the packer 200 is actuated, pushing the first prop 205 to wedge under the upper sealing element
203a to thereby push the upper sealing element 203a outward (i.e., toward wellbore 202). The actuation of the packer also pushes the second prop 207 to wedge under the lower sealing element 203c to thereby push the lower sealing element 203c outward. This can be seen in Fig.
2B.
Referring still to Fig. 2B, one or both of the first and second props 205, 207 can compress
the middle sealing element 203b to outwardly expand the middle sealing element 203b. For
example, the first prop 205 can include a flat downward surface 205a. The second prop 207 can
include a flat upward surface 207a. Actuation of the packer 200 moves the first and second
props 205, 207 toward each other, causing the flat downward surface 205a and the flat upward
surface 207a to compress the middle sealing element 203b to outwardly expand the middle
sealing element 203b.
The packer 200 can include an upper anti-extrusion ring, indicated generally at 209,
disposed adjacent and upward of the upper sealing element 203a and configured to resist and/or
prevent upper axial extrusion of the upper sealing element 203a. In certain embodiments, the
packer 200 can include a lower anti-extrusion ring, indicated generally at 211, disposed adjacent
and downward of the lower sealing element 203c and configured to resist and/or prevent lower
axial extrusion of the lower sealing element 203c. The upper and/or lower anti-extrusion ring
209, 211 can have any suitable design and can include or be composed of, for example, polyether
ether ketone (PEEK), polytetrafluoroethylene (e.g., TEFLON), a perfluoroelastomer (e.g.,
KALREZ), a metal, and/or any other suitable rigid or semi-rigid material as appreciated by those
skilled in the art.
In certain embodiments, the first and/or second prop 205, 207 can include or be
composed of a metal and/or any other suitable material. The sealing elements 203a, 203b, 203c
(and 103 from FIG. 1A) can include or be composed of an elastic material and/or any other
suitable material.
The packer 200 can include an upper and/or lower backup ring, indicated generally at 213,
215, disposed outwardly adjacent the upper sealing element 203a and/or lower sealing element
203c, respectively. The upper and/or lower backup ring 213, 215 are generally known in the art
may include or be composed of at least one of Teflon or wire mesh and/or any other suitable
material. The upper and lower backup rings 213, 215, if utilized, are configured to support and
contain the pushed and hence energized upper and lower sealing element 203a, 203c and to form
an anti-extrusion barrier between the wellbore 202 and the body 201.
In certain embodiments, the packer 200 can include an upper and/or lower support shoe
217, 219 disposed outwardly adjacent the upper and/or lower backup ring 213, 215, respectively.
In certain embodiments, the upper and/or lower support shoe 217, 219 can include or be
composed of metal and/or any other suitable material. The upper and lower support shoes 217,
219, if utilized, are used to support and contain the energized upper and lower sealing element
203a, 203c and to form an anti-extrusion barrier between the wellbore 202 and the body 201.
In certain embodiments where backup rings 213, 215 are used in conjunction with the
support shoes 217, 219, the backup rings 213, 215 can be made of a material that is more easily
deployed/deformed than, e.g., Teflon or wire meshing. When the sealing element pushes against
backup rings 213, 215 (e.g., due to the increased temperature of a high temperature/pressure
environment) during the setting process, the backup rings will deploy/deform from being pushed
by the energized sealing element 203a, 203c to deploy and/or change the shape of the support
rings 217 and 219.
The packer 200 can include a lower cone 225 slidably disposed around the body 201 and
a lower slip 227. In certain embodiments, the lower cone 225 can include or have a ramp shape
on an outer diameter thereof. As shown in Fig. 2A, the lower cone 225 can be breakably pinned
to be fixed relative to the body 201 until a suitable shearing force is applied. When a suitable
shearing force is applied (e.g., via lower actuator 229 or any other suitable force), the lower cone
225 can move upward to push (e.g., via lower pushing surface 225a) against the lower sealing
element 203c, the lower anti-extrusion ring 211, or any other suitable component.
Also as shown, the lower slip 227 can be configured to move upward relative to the lower
cone 225 to be outwardly deployed via any suitable application of force (e.g., via lower actuator
229). It is appreciated by those with ordinary skilled in the art that the lower slip 227 can be
pushed up over the lower cone 225 by the lower actuator 229 before or while the lower actuator
229 pushes on the lower cone 225 to deploy the lower slip 227 to fix the packer 200 within the
well. Regardless, the lower actuator 229 can advance upward and apply force to the lower cone
225 and the components upward of the lower cone 225 through the lower cone 225.
The packer 200 can include an upper cone 221 slidably disposed around the body 201
and an upper slip 223. In certain embodiments, the upper cone 221 can include or have a ramp
shape on an outer diameter thereof. As shown in Fig. 2A, the upper cone 221 can be breakably
pinned to be fixed relative to the body 201 until a suitable shearing force is applied (e.g., via
lower actuator 229 or any other suitable force). When a suitable shearing force is applied (e.g.,
via lower actuator 229 or any other suitable force), the upper cone 221 can move upward to
outwardly deploy the upper slip 223 to grip the wellbore and/or well casing, as shown in Fig. 2B.
The upper cone 221 can include an upper pushing face 221a configured to limit upward
movement of the upper sealing element 203a and/or any other associated component. For example, as the sealing elements 203a, 203b, 203c and props 205, 207 are pushed upward by the pushing face 225a of the lower cone 225, the upper sealing element 203a (and/or the upper backup ring 213/support shoe 217) can push against pushing face 221a of the upper cone 221 to shear the connection between the upper cone 221 and the body 201 and push the upper cone 221 upward to deploy the upward slip 223. As shown in Fig. 2B, after the upper cone 221 has fully deployed the upper slip 223, the upper cone 221 can be prevented from moving further upward, thereby blocking (with pushing face 221a) further upward movement of the sealing elements
203a, 203b, 203c and props 205, 207, and/or other associated components (e.g., backup ring 213,
215 and/or support shoes 217, 219).
This resistance to further upward motion causes the sealing elements 203a, 203b, 203c
and props 205, 207 to compress together between the upper cone 221 and the lower cone 225.
As a result, the upper prop 205 is pushed to wedge under the upper sealing element 203a and the
lower sealing element 203c is pushed up onto the lower prop 207. This creates a double-propped
seal which can maintain a gas tight seal in conditions where pressure is applied to either side of
the packer and/or pressure reversals occur.
Additionally, the middle sealing element 203b can be compressed between the upper
prop 205 and the lower prop 207 to deform the middle sealing element outward. This can
provide an additional seal. However, it is contemplated that the middle seal 203b need not be
included and that the upper and lower props 205, 207 can be formed or joined together or
otherwise contact each other in any other suitable manner.
While the packers 100, 200 as described above include only a single sealing assembly, it
is contemplated that any number of sealing assembly (e.g., sealing elements and props) can be
included on a single packer 100, 200. It is contemplated that any suitable actuation scheme to actuate the packer between the sealed and unsealed state can be employed as is appreciated by those skilled in the art (e.g., hydraulic actuation, electrical actuation, mechanical actuation).
In accordance with an aspect of this disclosure, a method for setting a well packer can
include propping an upward sealing element or an upward portion of a single sealing element to
create a first propped seal point and propping a downward sealing element or a downward
portion of the single sealing element to create a second propped seal point.
As described hereinabove, dual propped sealing elements create more stored element
pressure for a given amount of setting force than the conventional element system (e.g., by
reducing a contact area of the seal). In this regard, a seal can be set with higher sealing pressure
or a seal can be fully set at traditional sealing pressures with less applied setting force.
In accordance with at least one aspect of this disclosure, a packer for wells can include a
body having a tubular shape, a sealing element having an upward end and a downward end and
disposed around the body. The packer also includes a first prop upward of the sealing element,
and a second prop downward of the sealing element. The first prop is configured to wedge under
the upward end of the sealing element and the second prop is configured to wedge under the
downward end of the sealing element to push the sealing element outward at both the upward
end and the downward end.
In accordance with any embodiment or combination of embodiments disclosed above, the
first prop can be formed as part of the body.
In accordance with any embodiment or combination of embodiments disclosed above, the
second prop can be movable relative to the body to slide upward and wedge under the sealing
element.
In accordance with any embodiment or combination of embodiments disclosed above, the
second prop can be configured to push the sealing element up onto the first prop when wedging
under the sealing element.
In accordance with any embodiment or combination of embodiments disclosed above, the
packer can include a lower cover sleeve is slidably disposed around the second prop.
In accordance with any embodiment or combination of embodiments disclosed above, the
lower cover sleeve can have a lower pushing face configured to push the sealing element upward
to wedge the first prop under the upward end of the sealing element.
In accordance with any embodiment or combination of embodiments disclosed above, the
packer can include an upper cover sleeve slidably disposed around the first prop and including an
upper pushing face configured to limit upward movement of the sealing element after the first
prop is wedged under the upper end of the sealing element.
In accordance with at least one aspect of this disclosure, a packer for a well includes a
body having a tubular shape, an upper sealing element, a middle sealing element, and a lower
sealing element disposed around the body, a first prop upward of the middle sealing element and
downward of the upper sealing element, and a second prop downward of the middle sealing
element and upward of the lower sealing element, wherein the first prop is configured to wedge
under the upper sealing element to push the upper sealing element outward, wherein the second
prop is configured to wedge under the lower sealing element to push the lower sealing element
outward.
In accordance with any embodiment or combination of embodiments disclosed above,
one or both of the first and second props can be configured to compress middle sealing element
to outwardly expand the middle sealing element.
In accordance with any embodiment or combination of embodiments disclosed above, the
first prop can include a flat downward surface.
In accordance with any embodiment or combination of embodiments disclosed above, the
second prop can include a flat upward surface.
In accordance with any embodiment or combination of embodiments disclosed above, the
packer can include an upper anti-extrusion ring disposed upward of the upper sealing element
and configured to resist and/or prevent upper axial extrusion of the upper sealing element.
In accordance with any embodiment or combination of embodiments disclosed above, the
packer can include a lower anti-extrusion ring disposed downward of the lower sealing element
and configured to resist and/or prevent lower axial extrusion of the lower sealing element.
In accordance with any embodiment or combination of embodiments disclosed above, the
anti-extrusion ring can include-a non-metal or metal material.
In accordance with any embodiment or combination of embodiments disclosed above, the
first and/or second prop can include a metal.
In accordance with any embodiment or combination of embodiments disclosed above, the
sealing element can include an elastic material.
In accordance with any embodiment or combination of embodiments disclosed above, the
packer can include an upper and/or lower backup ring disposed outwardly adjacent the upper
sealing element and/or lower sealing element, respectively.
In accordance with any embodiment or combination of embodiments disclosed above, the
upper and/or lower backup ring can include at least one of Teflon, wire mesh, thermal-plastic, or
other non-metallic material.
In accordance with any embodiment or combination of embodiments disclosed above, the
packer can include an upper and/or lower support shoe disposed outwardly adjacent the upper
and/or lower backup ring, respectively.
In accordance with any embodiment or combination of embodiments disclosed above, the
upper and/or lower support shoe can include metal.
In accordance with any embodiment or combination of embodiments disclosed above, the
packer can include an upper cone slidably disposed around the body and an upper slip, wherein
the upper cone is configured move upward to outwardly deploy the upper slip.
In accordance with any embodiment or combination of embodiments disclosed above, the
upper cone includes an upper pushing face configured to limit upward movement of the upper
sealing element.
In accordance with any embodiment or combination of embodiments disclosed above, the
packer can include a lower cone slidably disposed around the body and a lower slip, wherein the
lower cone is configured move upward to push against the lower sealing element or the lower
anti-extrusion ring, wherein the lower slip is configured to move upward relative to the lower
cone to be outwardly deployed.
In accordance with any embodiment or combination of embodiments disclosed above, a
method for setting a well packer can include propping an upward sealing element or an upward
portion of a single sealing element to create a first propped seal point and propping a downward sealing element or a downward portion of the single sealing element to create a second propped seal point.
The methods and systems of the present disclosure, as described above and shown in the
drawings, provide for improved well packers with superior properties including dual propped
sealing elements. While the apparatus and methods of the subject disclosure have been shown
and described with reference to embodiments, those skilled in the art will readily appreciate that
changes and/or modifications may be made thereto without departing from the spirit and scope of
the subject disclosure.
Claims (16)
1. A packer for a well, comprising: a body having a tubular shape; an upper sealing element, a middle sealing element, and a lower sealing element disposed around the body; a first prop upward of the middle sealing element and downward of the upper sealing element; and a second prop downward of the middle sealing element and upward of the lower sealing element, wherein the first prop is configured to wedge under the upper sealing element to push the upper sealing element outward, and wherein the second prop is configured to wedge under the lower sealing element to push the lower sealing element outward.
2. The packer of claim 1, wherein one or both of the first and second props are configured to compress the middle sealing element to outwardly expand the middle sealing element.
3. The packer of claim 2, wherein the first prop includes a flat downward surface.
4. The packer of claim 2, wherein the second prop include a flat upward surface.
5. The packer of claim 1, further comprising an upper anti-extrusion ring disposed upward of the upper sealing element and configured to resist and/or prevent upper axial extrusion of the upper sealing element.
6. The packer of claim 1, further comprising a lower anti-extrusion ring disposed downward of the lower sealing element and configured to resist and/or prevent lower axial extrusion of the lower sealing element.
7. The packer of claim 1, wherein the anti-extrusion ring includes a plastic, non-metallic or metal material.
8. The packer of claim 1, wherein the first and/or second prop includes plastic or metal material.
9. The packer of claim 1, wherein the sealing element includes an elastic material.
10. The packer of claim 1, further comprising an upper and/or lower backup ring disposed outwardly adjacent the upper sealing element and/or lower sealing element, respectively.
11. The packer of claim 10, wherein the upper and/or lower backup ring includes at least one of Teflon, wire mesh, thermal-plastic or other non-metallic material.
12. The packer of claim 10, further comprising an upper and/or lower support shoe disposed outwardly adjacent the upper and/or lower backup ring, respectively.
13. The packer of claim 1, wherein the upper and/or lower support shoe includes metal.
14. The packer of claim 1, further comprising an upper cone slidably disposed around the body and an upper slip, wherein the upper cone is configured move upward to outwardly deploy the upper slip.
15. The packer of claim 14, wherein the upper cone includes an upper pushing face configured to limit upward movement of the upper sealing element.
16. The packer of claim 1, further comprising a lower cone slidably disposed around the body and a lower slip, wherein the lower cone is configured move upward to push against the lower sealing element or the lower anti-extrusion ring, wherein the lower slip is configured to move upward relative to the lower cone to be outwardly deployed.
Priority Applications (1)
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AU2022203667A AU2022203667B2 (en) | 2016-09-30 | 2022-05-30 | Well packers |
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AU2016424859A AU2016424859B2 (en) | 2016-09-30 | 2016-09-30 | Well packers |
AU2016424859 | 2016-09-30 | ||
PCT/US2016/054863 WO2018063354A1 (en) | 2016-09-30 | 2016-09-30 | Well packers |
AU2022203667A AU2022203667B2 (en) | 2016-09-30 | 2022-05-30 | Well packers |
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AU2016424859A Division AU2016424859B2 (en) | 2016-09-30 | 2016-09-30 | Well packers |
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AU2022203667B2 AU2022203667B2 (en) | 2023-11-02 |
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AU (2) | AU2016424859B2 (en) |
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BR122022010728B1 (en) * | 2016-09-30 | 2022-11-29 | Halliburton Energy Services, Inc | PACKER FOR A WELL AND METHOD FOR LAYING A PACKER |
US11299957B2 (en) * | 2018-08-30 | 2022-04-12 | Avalon Research Ltd. | Plug for a coiled tubing string |
US11492869B2 (en) | 2021-04-05 | 2022-11-08 | Baker Hughes Oilfield Operations Llc | Backup and packer |
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CA3034223C (en) | 2021-04-27 |
CA3081047A1 (en) | 2018-04-05 |
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MX2019002460A (en) | 2019-07-18 |
NO20190182A1 (en) | 2019-02-08 |
CA3081146A1 (en) | 2018-04-05 |
CA3081047C (en) | 2022-05-10 |
BR112019003857B1 (en) | 2022-09-13 |
BR122022010728B1 (en) | 2022-11-29 |
AU2016424859A1 (en) | 2019-02-21 |
US20180347306A1 (en) | 2018-12-06 |
SG11201900832UA (en) | 2019-02-27 |
AU2022203667B2 (en) | 2023-11-02 |
US11578554B2 (en) | 2023-02-14 |
CA3034223A1 (en) | 2018-04-05 |
BR122022010728A8 (en) | 2022-10-18 |
WO2018063354A1 (en) | 2018-04-05 |
GB2569706A (en) | 2019-06-26 |
US11066897B2 (en) | 2021-07-20 |
GB201901645D0 (en) | 2019-03-27 |
BR112019003857A2 (en) | 2019-06-18 |
US20210310328A1 (en) | 2021-10-07 |
NL1042545A (en) | 2018-04-04 |
BR122022010728A2 (en) | 2019-06-18 |
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